HW5_skeleton

7.1

• 1. Probability Density Function
• 2. Model
• 3. True
• 4. 1/2
• 5. x=μ - σ and x=μ + σ
• 6. The proportion of the population with the characteristic described by the interval of values OR the probability that a randomly selected individual from the population will have the characteristic described by the interval of values
• 25. mu = 2, sigma = 3
• 26. mu = 5, sigma = 2
• 27. mu = 100, sigma = 15
• 28. mu = 530, sigma = 100
• 33 parts a and b are done for you. But please take a second and look at it!

shadenorm(mu=3400, sig=505, between=c(4410, 6000),col = "blue",dens = 150)

3. 2.28% of babies weigh more than 4410 grams There is a 0.028 chance that a full term baby weighs more than 4410 grams

1. The proportion of human pregnancies that last over 280 days is .1908. The probability that a random pregnancy lasts more that 280 days is 19.08%.

2. The proportion of human pregnancies that last between 230-260 days is .3416. The probability that a randomly selected human pregnancy lasts from 230-260 days is .3416.